Detection of starch
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Unknown Principle
Starch can be qualitatively detected with iodine potassium iodide solution. Potato, grain and fruits of leguminous plants are foods which contain starch.The polysaccharide starch is not a chemically uniform compound, but consists of the components amylose and amylopectin. Both are built up from D-glucose molecules, forming a helical molecular framework. With iodine, a characteristically coloured inclusion compound is formed, in which one iodine molecule is held within each spiral of the molecular framework. Learning objectives - Detection methods for starch
Benefits - Easy teaching and efficient learning by using interactive experimentation PHYWE-Software
- Experiment is part of a complete solution set with experiments for the topic Food Chemistry matched with international curriculum: all topics are covered
Scope of delivery |
Support base, separable for 2 rods
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02001-00
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1
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Stand rods, stainless steel, various sizes
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02059-00
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1
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Mortar w. pestle, 70ml, porcelain
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32603-00
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1
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Wire gauze with ceramic, 160 x 160 mm
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33287-01
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1
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Spoon, special steel
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33398-00
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1
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Wash bottle, 250 ml, plastic
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33930-00
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1
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Beakers, Boro, low form, various sizes
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46055-00
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1
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Test tube, laboratory glass, various lengths, 100 pcs.
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37658-10
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1
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Test tube brush w. wool tip,d20mm
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38762-00
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1
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Test tube rack, wood, for 6 tubes d= 22mm
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MAU-20042200
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1
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Ring with boss head, i. d. = 10 cm
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37701-01
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1
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Students thermometer,-10...+110°C, l = 180 mm
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38005-02
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1
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Laboratory pen, waterproof, black
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38711-00
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1
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Test tube holder, up to d 22mm
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38823-00
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1
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Rubber stoppers, without bore, various diameters
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39255-00
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3
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Protecting glasses, clear glass
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39316-00
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1
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Pipettes with rubber cap, various sizes
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64701-00
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1
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Iodine potass.iodide sol., 250 ml
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30094-25
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1
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Starch,soluble 250 g
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30227-25
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1
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Butane burner with cartridge, 220 g
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32180-00
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1
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Boiling beads, 200 g
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36937-20
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1
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